PowerShell is now included from version 9.1 in all Windows Cristie xBMR recovery Software - WinPE Environments.
To open PowerShell combine keys:
To find the currently available Modules type
PowerShell can be opened outside of an active recovery.
If using CRISP to create the ISO tick the ‘Select if you wihs to include PowerShell support in the ISO or Bootable USB media’ check box